Tetra

Xue, Xiao-Feng, Song, Zi-Wei & Hong, Xiao-Yue, 2007, Six new species of Te t r a Keifer (Acari: Eriophyidae: Phyllocoptinae) from China, Zootaxa 1614, pp. 1-16 : 2-3

Key to the species of Tetra from China

1 Coxal area smooth ....................................................................................................................................... 2

- Coxal area with short lines or granules...................................................................................................... 13

2 Setae h1 absent .............................................................................................. Tetra intermedia Huang, 2001

- Setae h1 present ........................................................................................................................................... 3

3 Empodium 7-rayed ........................................................................................... Tetra yushania Huang, 2001

- Empodium 4-rayed ...................................................................................................................................... 4

4 Coxal area without prosternal apodeme ........................................................ Tetra similisforca Huang, 2001

- Coxal area with prosternal apodeme............................................................................................................ 5

5 Shield design without median line............................................................................................................... 6

- Shield design with median line.................................................................................................................... 8

6 Admedian lines on prodorsal shield separate .................................... Tetra acerii Xue, Song & Hong, 2006

- Admedian lines on prodorsal shield connected ........................................................................................... 7

7 Admedian lines on prodorsal shield connected at basal 2/3 .................................. Tetra toona Huang, 2001

- Admedian lines on prodorsal shield connected at base ................. Tetra sorbusis Xue, Song & Hong, 2006

8 Shield design with median line separate from admedian lines .......... Tetra lucidi Xue, Song & Hong, 2006

- Shield design with median line connected with admedian lines ................................................................. 9

9 Shield design with median line 1/3 anterior, female genital coverflap with 8 to 10 longitudinal ridges ...... ..................................................................................................... Tetra guiyangensis Kuang & Hong, 1989

- Shield design with median line 1/3 at base, female genital coverflap with more than 10 longitudinal ridges ................................................................................................................................................................... 10

10 Femur I and II with longitudinal lines ............................................. Tetra polygoni Wei, Chen & Xie, 2003

- Femur smooth ............................................................................................................................................ 11

11 Dorsal annuli with spiny microtubercles laterally ......................... Tetra smilaxis Xue, Song & Hong, 2006

- Dorsal annuli smooth................................................................................................................................. 12

12 Admedian and submedian lines separate ..................................... Tetra clerodendri Wei, Chen & Xie, 2003

- Admedian and submedian lines connected .......................................... Tetra sinicae Li, Wei & Wang, 2006

13 Dorsal annuli with microtubercles............................................................................................................. 14

- Dorsal annuli smooth................................................................................................................................. 31

14 Empodium 2-rayed ..................................................... Tetra concava ( Keifer), 1939 ; Hong & Zhang, 1996

- Empodium more than 2-rayed ................................................................................................................... 15

15 Dorsal annuli with elliptical microtubercles.............................................................................................. 16

- Dorsal annuli with spiny or short-line microtubercles............................................................................... 24

16 Female genital coverflap smooth ...................................................... Tetra dalbergiae Kuang & Zhuo, 1989

- Female genital coverflap with longitudinal ridges .................................................................................... 17

17 Empodium 6 to 7-rayed ............................................................................................................................. 18

- Empodium 4-rayed .................................................................................................................................... 19

18 Solenidion knobbed, dorsal annuli with elliptical microtubercles on rear annular margins.......................... .......................................................................................................... Tetra salixis Xue, Song & Hong, 2006

- Solenidion tapered, dorsal annuli with elliptical microtubercles ahead of rear annular margins.................. ............................................................................................................... Tetra japonicae Xue & Hong, 2005

19 Prodorsal shield with lateral lobes............................................................................................................. 20

- Prodorsal shield without lateral lobes........................................................................................................ 21

20 Coxal area with granules, solenidion unknobbed ...................... Tetra ningshanis Xue, Song & Hong, 2006

- Coxal area with granules and short lines, solenidion knobbed...................................................................... ....................................................................... Tetra lobulifera ( Keifer), 1961 ; Hong, Wang & Zhang, 2006

21 Median, admedian and submedian lines robust, dorsal annuli with faint microtubercles............................. ................................................................................................................................. Tetra coriariae sp. nov.

- Median, admedian and submedian lines normal, dorsal annuli with distinct microtubercles ................... 22

22 Frontal lobe acuminate ..................................................................................... Tetra diamantiacae sp. nov.

- Frontal lobe broad...................................................................................................................................... 23

23 Prodorsal shield design indistinct, coxal area with short lines ...... Tetra cuihuae Xue, Song & Hong, 2006

- Prodorsal shield design distinct, coxal area with short lines and granules ............... Tetra zhouzhis sp. nov.

24 Empodium 4-rayed .................................................................................................................................... 25

- Empodium 6 to 7-rayed ............................................................................................................................. 27

25 Admedian and submedian lines connected, coxal area with granules....................................................... 26

- Admedian and submedian lines separate, coxal area with short lines........................................................... ................................................................................................. Tetra pinnatifidae Xue, Song & Hong, 2006

26 Median and admedian lines separate ...................................................................... Tetra actinidiae sp. nov.

- Median and admedian lines connected ................................................. Tetra suspensae Xue & Hong, 2005

27 Median line present.................................................................................................................................... 28

- Median line absent ................................................................................................... Tetra hupeanae sp. nov.

28 Shield design with complete median line .............................................. Tetra formosae Xue & Hong, 2005

- Shield design with incomplete median line ............................................................................................... 29

29 Median line connected with admedian lines at basal 1/3........................................................................... 30

- Median and admedian lines separate ................................................. Tetra superbae Huang & Wang, 2004

30 Admedian and submedian lines separate .................................................................. Tetra sinicusis sp. nov.

- Admedian and submedian lines connected ............................................... Tetra lobatae Xue & Hong, 2005

31 Prodorsal shield smooth ........................................................... Tetra louguantais Xue, Song & Hong, 2006

- Prodorsal shield with design...................................................................................................................... 32

32 Median line on prodorsal shield present .................................................................................................... 33

- Median line on prodorsal shield absent ..................................................................................................... 37

33 Median, admedian and submedian lines complete and separated from each other ....................................... .................................................................................................. Tetra phyllostachyis Kuang & Zhang, 1999

- Prodorsal shield design network................................................................................................................ 34

34 Setae h1 present ................................................................................... Tetra shiheziensis Wang & Lu, 2004

- Setae h1 absent .......................................................................................................................................... 35

35 Prodorsal shield without median line at base ... Tetra gleditsiae Kuang & Luo ; Kuang, Luo & Wang, 2005

- Prodorsal shield with median line at base.................................................................................................. 36

36 Female genital coverflap with 3 transverse lines each side at base and 5 to 8 longitudinal ridges, median line connected with admedian lines at base, central and anterior ....................... Tetra cleomis Kuang, 1991

- Female genital coverflap with 8 longitudinal ridges, median line connected with admedian lines at base .. ............................................................................................................. Tetra lycopersici Xue & Hong, 2005

37 Coxal area without prosternal apodeme ........................................... Tetra lushuiensis Kuang & Hong, 1989

- Coxal area with prosternal apodeme.......................................................................................................... 38

38 Empodium 6-rayed, submedian lines present ............................ Tetra nanjingensis Lin, Jin & Kuang, 1997

- Empodium 4-rayed, submedian lines absent ............................................................................................. 39

39 Admedian lines connected at base, female genital coverflap with 12 to 14 longitudinal ridges................... .............................................................................................................................. Tetra populi Kuang, 1999

- Admedian lines separate, female genital coverflap with 8 to 10 longitudinal ridges.................................... ............................................................................................................ Tetra heilongjiangensis Kuang, 1995